同相输入运算放大器输入电阻的讨论

Discussion of Input Resistance of In-Phase Operational Amplifier

现行高职《电子技术》教材中,运算放大器特性非理想时,同相输入运算放大器输入电阻的数学表达式差别很大,原因在于它们均是一般式在不同条件下近似的结果。

Mathematic expressions of input resistance of In -Phase Operational Amplifier make a great difference in current textbook of Electronic Technology for Higher Vocational colleges. The feature of OA is not ideal because they are the approximate results of the General expressions under difference conditions.